Yes, try:
2003 IRC M1307.3 Elevation of ignition source. Appliances having an ignition source shall be elevated such that the source of ignition is not less than 18 inches (457mm) above the floor in garages. For the purpose of this section, rooms or spaces that are not part of the living space of a dwelling and that communicate with a private garage through openings shall be considered to be part of the garage.